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High-efficiency pneumatic layout structure of synergistic jet for high-altitude propeller and control method

A technology of coordinated jet flow and aerodynamic layout, applied in propellers, aircraft parts, transportation and packaging, etc., can solve the problems of difficult to effectively improve the working efficiency of the propeller propulsion system, low working efficiency, low controllable flow rate, etc., and achieve the expansion of working conditions range, improved aerodynamic efficiency, and increased stall angle of attack effects

Active Publication Date: 2014-12-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the propeller design method of the traditional layout cannot meet the performance requirements of high-altitude and long-endurance aircraft, and some common flow control technologies at this stage have many shortcomings, such as: low work efficiency, small application range, and low controllable flow velocity. , therefore, it is difficult to effectively improve the working efficiency of the propeller propulsion system

Method used

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  • High-efficiency pneumatic layout structure of synergistic jet for high-altitude propeller and control method
  • High-efficiency pneumatic layout structure of synergistic jet for high-altitude propeller and control method
  • High-efficiency pneumatic layout structure of synergistic jet for high-altitude propeller and control method

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Embodiment 1

[0060] This embodiment provides a high-altitude propeller cooperative jet aerodynamic layout configuration installed on the propulsion system of a 20km high-altitude aircraft.

[0061] like figure 1 As shown, it is a three-dimensional view of high-altitude propeller cooperative jet efficient aerodynamic layout configuration; as figure 2 As shown, it is the main figure of high-altitude propeller cooperative jet efficient aerodynamic layout configuration; image 3 As shown, it is the rear body diagram of the high-altitude propeller cooperative jet efficient aerodynamic layout configuration; Figure 4 for figure 1 A partial enlarged view of the middle 5 area; Figure 5 for figure 2 Sectional view of the internal structure and schematic diagram of airflow circulation; the propeller includes blades, blade leading edge 3, blade trailing edge 4, hub and mounting holes 6; the coordinated jet device includes a coordinated jet blowing port 1 and a coordinated jet suction port 2 ,...

Embodiment 2

[0069] This embodiment provides a high-altitude propeller cooperative jet aerodynamic layout configuration installed on the propulsion system of a 28km high-altitude aircraft. Among them, the propeller includes a blade, a blade leading edge 3, a blade trailing edge 4, a hub and a mounting hole 6; the coordinated jet device includes a coordinated jet blowing port 1, a coordinated jet suction port 2, a coordinated jet internal pipe 8, and a coordinated jet flow device. Jet internal air pump7.

[0070] The blade diameter of the high-altitude propeller coordinated jet aerodynamic layout configuration in this embodiment is 2.2 m, and the number of blades is 2. Considering the structural weight, aerodynamic efficiency and aerodynamic requirements, the arrangement interval of the cooperative jet device along the span of the blade is 30% R-90% R (R is the radius of the blade), in order to obtain the best comprehensive performance.

[0071] like figure 1 As shown in Fig. 1, the coope...

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Abstract

The invention provides a high-efficiency pneumatic layout structure of synergistic jet for a high-altitude propeller and a control method. The high-efficiency pneumatic layout structure is characterized in that a plurality of synergistic jet devices are distributed along propeller blades of the propeller in a spanwise sectional manner; each synergistic jet device comprises an air blowing opening formed in a negative-pressure area of the front edge of the upper surface of the propeller, an air suctioning opening formed in a high-pressure area of the rear edge of the upper surface of the propeller, an airflow pipeline arranged in the paddle and an air pump arranged in the airflow pipeline; the air blowing opening and the air suctioning opening are communicated by the airflow pipeline to form an air-blowing and air-suctioning loop; the air pump is used for driving air suctioning and air spraying to be implemented simultaneously, and by control of the air pump, the air suctioning amount and the air spraying amount are same. The high-efficiency pneumatic layout structure provided by the invention has the advantages that the defects of the traditional propeller layout and the common flow control technology can be made up, and the working efficiency of a propelling system of the high-altitude propeller can be improved.

Description

technical field [0001] The invention belongs to the technical field of propellers, and in particular relates to a high-altitude propeller cooperative jet flow efficient aerodynamic layout configuration and a control method. Background technique [0002] With the continuous development of aviation technology, material technology and other science and technology, high-altitude airship propellers have broad application prospects in communication, remote sensing, early warning and other fields by virtue of the stable meteorological conditions in the stratosphere and good electromagnetic characteristics. hotspot. [0003] Compared with traditional aircraft propellers, high-altitude airship propellers work at altitudes where the atmospheric density is less than 10% of sea level (height > 20km), and due to their larger diameters (about 10m in diameter), their working state Reynolds number ranges around 200,000. Although the Reynolds number in its working state is low, the tip M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/18B64C11/20
Inventor 杨旭东朱敏宋超张顺磊宋文萍许建华宋笔锋安伟刚王海峰李育斌张玉刚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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